| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| MARTEL (UK) LIMITED | 08887855 | 12/02/2014 | One Red Flag |
| QUALSURV INTERNATIONAL LIMITED | 04473681 | 09/01/2025 | Silver |
| QUALSURV MARINE CONSULTING LIMITED | 07225092 | 01/03/2019 | Silver |
| TRISHARE HOLDINGS LIMITED | 13099741 | 24/12/2020 | Bronze |
| WINTHORPE LEYS MANAGEMENT COMPANY (NEWARK) LIMITED | 05313925 | 01/01/2010 | Dissolved |
| Watermark Industries Ltd | 04576112 | 05/08/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| MAG PLUMBING AND HEATING LIMITED | 07013808 | 06/01/2012 | 07/02/2014 | One Red Flag |